<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>网易邮箱页面布局</title>
<style>
    header,section,footer{
		height:330px;
		border:1px solid green;
	}
</style>
</head>

<body>
<header>
<h1>页面头部</h1>
</header>
<section>
<h1>页面主体<h1>
<br/>
</section>
<footer>
<h1>页面底部</h1>
</footer>

</body>
</html>
